TV series example of the word

Vikings Season 1, Episode 8
I offer you my fealty

Vikings Season 1, Episode 6
Do you swear allegiance and fealty

Game of Thrones Season 7, Episode 6
"swear fealty to King Joffrey, and prevent any strife

Game of Thrones Season 1, Episode 7
Today I shall accept oaths of fealty

Game of Thrones Season 2, Episode 3
But if we pledge fealty to them,